Why is a bhd501-d dehumidifier very noisy?. can you give me any ideas on fixing this?

I can't hear YOUR dehumidifier and can't tell if it's out of the ordinary, but dehumidifiers have all the same internal parts as a refrigerator with the addition of a fan to blow air through the coils to keep them from freezing up. They do tend to be a bit noisy.

I would guess that some rubber anti-vibration mounts have aged. If so this may allow the cooling fan to move and grate on the fan housing. It is unusual for the hermetic compressor to give trouble but having just said that, on rare occasions the big-end bearing can fail. This would cause a very obvious knocking noise coming from the compressor. Its just a case of carefully opening up the dehumidifier housing and looking to see what is happening. As an aide-memoire one can tape all the screws to a piece of cardboard adding notes as to where they came from. Take care and good luck!

Pull the plug on the unit and strike it moderately with your hand listening for any vibrations. Try to pinpoint the source of that vibration and correct it. You should also place the unit on solid ground to eliminate the possibility of the noise being amplified by the surface it is sitting on. "Very noisy" is very subjective. Best I can do for now. Please post your findings

Place the dehumidifier feet on foam or rubber vibration absorbing pads.

Touch all sides of the cabinet with the compressor running to see if your touch will dampen the noise. Once the noisy area is identified check that the fasteners are all in place and tight. Sometimes loostening and retightening a number of fasterners around the noisy area will cure this problem.

Have you noticed it not running as often or not being noisy? Also have you tried to select a continuous drain setting if your unit has one?

Hi,

There are many reasons why a dehumidifier will not work or collect water.

Here is a tip that I wrote to help people to figure out what is going wrong with their dehumidifier

Dehumidifier is running but no water is in bucket

heatman101
././,

Hi,

With the unit unplugged, open the cover and check the alignment of the fan. If the fan is stuck or rubbing against the fan cowling, adjust the fan motor's mounting hardware so that the fan turns freely.

Take care.

These can be noisy.
Does the noise only happen when the compressor runs? These compressors float on rubber bushings to isolate the vibrations and maybe one of the three nuts on the mounting studs may be loose.
The fan bearings can also wear out.

I have a Comfortaire BHD501 dehumidifier. A couple weeks ago I noticed ice building up on top of the unit,so I unplugged it to defrost. I plugged it back in and it worked until I noticed the "CH" "01" code. It would run a few seconds then shut off with that code showing. I took off the front of the unit and noticed rust on some of the metal parts. Then I took the cover off the circuit board for the front read out. I noticed corrosion on some of the solder points. When I looked closer at the plastic cover for the circuit board I noticed a small burn mark. The water from the melting ice must have run behind the cover and shorted out the circuitboard. At this point I don't know if new boards are available.

What is the temperature in the space where you are operating thsi dehumidifier? When you first start a refrigerating system some refrigerant may have condensed into the compressor oil. When the compressor starts the pressure in it drops rapidly. The oil boils and some passes through the compressor valves. After a few minutes of operation this condition normally corrects itself.